02. subsea chokes and flow modules
TRANSCRIPT
Subsea Chokes and Flow Modules
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Reliability
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Designed for maximum flexibility and reliability,
FMC’s “F” Series Subsea Chokes and Flow Modules are
ideal for production, injection, gas lift and waterflood
applications. “Best practice” features leverage FMC’s
field proven subsea experience and technology,
including metal and elastomeric seals, mechanical
clamp technology, fluid dynamics, flow assurance and
system design.
FMC’s subsea choke family includes the Non-Retriev-
able Choke, Insert Retrievable Choke, Insert Running
Tool, Hydraulic Stepping Actuator and Electric
Actuators. Additionally, FMC has introduced
Retrievable Flow Modules, allowing modular packaging
of chokes, flow meters, pressure/temperature sensors
and erosion detectors in an easily retrievable/re-deploy-
able and/or upgradeable package.
Reliability
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Rigorous Qualification Testing•API6A/17D(ISO10423/ISO13628-4)PR2,AnnexFtested
•ExtendedFMCendurancetestedat300˚F
•IndependentCvtestedtoISA75.02
•Independenterosiontest
•IndependentAPI6AAnnexIslurrytest
•Hyperbarictestedto10,000feet(3,048m)waterdepth
•Endurancetestedat1millionpulses/steps
•Subseafield-testedundersevereoperatingconditions
Testing
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Non-Retrievable Subsea Choke Featuresamulti-holetungstencarbideplugandcagedesignwithasteelprotectivejacketaroundthecagetopreventimpactdamage.Theplugisfullyguided,pressurebalancedandrigidlyattachedtothestemtoeliminateflowinducedvibration.
Features and Benefits•Largegallerytomitigateerosionandextend chokelife
•Fullysupportedcageiscapableofreverseflow atmaximumworkingpressure
•Bodyoutletdesignedtoacceptafulltungsten carbidelinerforcompletewearprotection
Non-RetrievableSubseaChoke
Hydraulic Stepping ActuatorDesignedasa“failasis”withaClassIVROVmanualoverride,theFMCHydraulicSteppingActuatorprovidesremotepositionfeedbackviaadirectstemmountedLVDT.
Features and Benefits•Twodoubleactingspringreturnpistons
•Crossovertubingtoguaranteeoperationinall hydraulic“backpressure”conditions
•Nonetactuatorhousingvolumechangeduring the“stepping”mode
•Largetopmountedvisualindicator
•Compensationviaanencloseddiaphragm
HydraulicSteppingActuator
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InsertRetrievableSubseaChoke
Proven experienceInsert Retrievable Subsea ChokeFeaturesanFMCfieldproven“KL”twopiecehingedclampconnectorwithahorizontalClassIVROVinterface.
Features and Benefits•Funneltypeguidestructuretointerfacewith chokerunningtool
•FunnelequippedwithROVgrabbarandelectrical parkingreceptacle
•Chokebodywithtwinstabwet-matehydraulic connectors
•Hotstabtestportbetweenprimaryandsecondary bodytoinsertseals
•Multi-holetungstencarbideplugandcageinsert withsteelprotectivejackettopreventdebris impactdamage
RetrievableFlowModule
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Proven experienceSubsea Choke Running Tool TheFMCsubseachokeinsertrunningtooliswirelinedeployedwithROVassistanceforinsertretrievalanddeployment.
Features and Benefits•Threepassivepistonsprovidesoftlanding
•Latchingandunlatchingthetoolispurelya mechanicalfunction
•Toolcompletelyextendstoprotectthechokeinsert onretrievalanddeployment
•Runningtoolprovidesa45˚roughalignment captureangle
•Hydraulichotstabprovidedtoassistinchoke insertremoval SubseaChokewithInsert
Running/RetrievalTool
Retrievable Choke and Flow ModuleTheFMCRetrievableChokeModuleprovideseasyretrievalanddeploymentonadownlinewithROVassistance;norunningtoolisrequired.
Features and Benefits•Improvedreliabilityandavailabilityduetosimplified interfaces
•Smallcompactfootprintallowingstraightforwardsubsea retrievalanddeployment
•Increasedvisibilityforguidanceandconnection
•Chokeinsertandbodyarerecoveredasanassembly,ideal forhigherosionservice
•Utilizesacosteffectiveboltedbonnetdesign
•Improvedthermalperformanceduetosimplifiedinterfaces andeaseofaddinginsulationontoentirechokebodyand actuator
•Upgradeablebyaddingretrievableflowmetersandsensors
•Reconfigurationiscontainedintheflowmodule permittingstandardizationofcoretreecomponents
•Sensitivecomponentscanberetrievedanddeployedwithout performingmajorworkovers
•Allowsforeasyconversionfromproductiontreetowater injectionserviceandviceversa
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